package com.br.huelton.sistema.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

import com.br.huelton.sistema.vendas.HibernateUtil;

public class ConexaoHibernateFilter implements Filter{
	
	private SessionFactory sf;

	@Override
	public void destroy() {	
		
	}

	@Override
	public void doFilter(ServletRequest servletFilter, ServletResponse servletResponse,
			FilterChain chain) throws IOException, ServletException {
		try{
			this.sf.getCurrentSession().beginTransaction();
		    chain.doFilter(servletFilter, servletResponse);
		    this.sf.getCurrentSession().getTransaction().commit();
		    this.sf.getCurrentSession().close();
		}catch(Throwable ex){
			
				try{
					if(this.sf.getCurrentSession().getTransaction().isActive()){
						this.sf.getCurrentSession().getTransaction().rollback();
					}
				}catch(Throwable t){
					t.printStackTrace();
			}
				throw new ServletException();
		}
		
		
	}

	@Override
	public void init(FilterConfig conf) throws ServletException {
		this.sf = HibernateUtil.getSession();
		
	}

}
